A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5855-01-010-4921
NSN 6240-01-135-3874
NSN 5960-01-399-4327
NSN 6620-00-186-8220
NSN 5905-00-814-1305
NSN 5930-00-528-9728
NSN 4140-01-028-2743
NSN 5930-00-558-9157
NSN 6145-01-492-5642
NSN 5990-00-715-2498
NSN 5935-00-802-2073
NSN 6610-01-347-6781